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https://issues.apache.org/jira/browse/HDFS-10440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15335466#comment-15335466
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Vinayakumar B commented on HDFS-10440:
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I was thinking about incompatible change done in
{{DataNodeMXBean#getNamenodeAddresses()}}. Patch returns more information than
just addresses.
Instead of breaking compatibility, how about adding one more metric entry, ex:
{{getNameNodesInfo()}}, this way we would keep the compatibility also, i.e.
Adding a new JMX entry is compatible mentioned
[here|http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/Compatibility.html#MetricsJMX].
Address information is redundant, but better than breaking compatibility.
[~kihwal], what you think?
> Improve DataNode web UI
> -----------------------
>
> Key: HDFS-10440
> URL: https://issues.apache.org/jira/browse/HDFS-10440
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, ui
> Affects Versions: 2.7.0
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Attachments: HDFS-10440.001.patch, HDFS-10440.002.patch,
> HDFS-10440.003.patch, datanode_2nns.html.002.jpg, datanode_html.001.jpg,
> datanode_loading_err.002.jpg, datanode_utilities.001.jpg,
> datanode_utilities.002.jpg, dn_web_ui.003.jpg, dn_web_ui_mockup.jpg,
> nn_dfs_storage_types.jpg
>
>
> At present, datanode web UI doesn't have much information except for node
> name and port. Propose to add more information similar to namenode UI,
> including,
> * Static info (version, block pool and cluster ID)
> * Block pools info (BP IDs, namenode address, actor states)
> * Storage info (Volumes, capacity used, reserved, left)
> * Utilities (logs)
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